Wrench



(N'oModeL) L. P. DAVIDSON. WRENCH.

Patented Feb. 18, 1896.

WITNESSES. -/IVVENTO ATTORNEYS.

- UNITED STATES ATENT OFFICE.

LEWVIS PETTY DAVIDSON, OF DENVER, COLORADO, ASSIGNOR TO HIMSELF, ANDEDWARD BARNES, OF PLEASANT HILL, NEBRASKA.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 554,991, dated February18, 1896.

Application filed June 21,1895. Serial No. 553,577. (No model.)

To all whom it may concern.-

Be it known that I, LEwIs PETTY DAVID- SON, of Denver, in the county ofArapahoe and State of Colorado, have invented a new and usefulImprovement in WVrenches, of which the following is a full, clear, andexact description.

My invention relates to an improvement in wrenches, and it has for itsobject to construct a wrench which will be exceedingly simple, durableand economic in its construction, and whereby the movable jaw may belocked or released at any point in its travel on the shank by a slightmovement of the thumb while the wrench is being held in the hand andanother object of the invention is to construct a wrench embodying butfew parts, any of which may be duplicated and none of them being liableto disarrangement.

The invention consists in the novel construction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a side elevation of the improved wrench. Fig. 2 is ahorizontal section taken substantially on the line 2 2 of Fig. 1. Fig. 3is a similar section on the line 3 3 of Fig. 1, and Fig. 4 is also ahorizontal section taken on the line 4: 4. of Fig. 1.

In carrying out the invention the shankA of the wrench is provided withthe usual fixed jaw 10, and the said shank is made to enter a handle B,the said handle being made in two sections b and b, the section I) beingthe receiving-section of the shank, having a suitable slot 11 madetherein, as shown in Figs. 3 and at, while the section b may be termed acover-section, and these two sections are connected by screws 12 ortheir equivalents. The handle is preferably made much wider at the topthan at any other portion in its length, being shaped at its lower endin such manner as to be conveniently grasped by the hand.

A yoke 13 is fitted to the upper or outer portion of the handle, havingan opening through which the shank passes, and the cap is usually of thesame contour and size as the wider end of the handle. The yoke 13 formsan important part of my construction and is provided so that thesectional handle will not have to bear the strain of moving parts, whichwould tend to spread the sections. It will also be seen that theshoulder a of the shank A bears upon the yoke and holds the same firmlyagainst the ends of the handle-sections,

and since the shank is in turn held by the bolts 12 it will be seen thatthe parts are made very secure.

The wider end of the handle, at what may be termed its front, has avertical socket 14 made therein, preferably circular in crosssection,and this socket is met by a horizontal recess 15 made in the handle, andis of angular shape, as shown in Fig. 3.

The movable jaw 16 is provided with the usual sleeve 17, the sleeve andjaw being fitted to slide on the shank A between the handle-cap and thefixed jaw 10. The adjustment of the movable jaw is accomplished throughthe medium of a slotted or mutilated 7 5 spondingly-threaded bore 20,made in the 8 sleeve of the adjustable jaw, as illustrated in Fig. 2. Athumb-piece 21 is secured to the mutilated screw, being passed throughthe recess 15 of the handle, as is also shown in Figs. 1 and 3.. Thus itwill be observed that 0 upon turning the screw so that its threads willregister with the plain surfaces of the bore 20 the adjustable jaw maybe moved on the shank A to any required position relative to the fixedjaw, and when the position has 95 been determined by simply turning thethumb-piece 21, which may be readily done while the wrench is grasped inthe hand, the threaded surfaces of the screw 18 will be made to coincidewith the threaded portions of the loo bore 20 in the adjustable jaw,thus holding the said jaw stationary, and it is evident that In theconstruction of this no matter in what position the adjustable jaw maybe placed this locking action maybe accurately, conveniently, and almostinstantly accomplished.

By means of the yoke 13 the screw 18 and thumb-piece 21 may be operatedfreely and without danger of forcing the sections of the handle apart,it being thus seen that the invention is particularly adapted to thatclass of wrenches in which the handles are of two longitudinal parts,the threaded shaft having a bearing between the same.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. In awrench, the combination of a shank, a handle,the same being formed of two sections jointly embracing" the shank, amovable jaw sliding on the shank, a revoluble screw connected to the jawand to the handle, and a yoke at the end of the handle, said yokeembracing the shank and the screw, substantially as described.

2. In awrench, the combination of ashank, a handle having sectionsjointly embracing the shank, a sliding j aw movable on the shank, a yokelying against the end of the handle which is adjacentto the sliding jawand held thereto by a shoulder on the shank, a screw connected with thesliding jaw and having bearings in the yoke, and a thumb-picce connectedto the screw and movable in a recess in the handle, substantially asdescribed.

LEWIS PETTY DAVIDSON.

\Vitnesses:

II. 0. llnnnrucns, CHAS. E. HILL.

